UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

Reply

Ultrascale FPGA internal maximum frequency issue

Accepted Solution Solved
Explorer
Posts: 270
Registered: ‎03-31-2016
Accepted Solution

Ultrascale FPGA internal maximum frequency issue

Hello

 

I want to used ultrascale FPGA(xcvu440), i want to know How many maximum frequency can be implement FPGA internal(register to register)


Accepted Solutions
Highlighted
Teacher
Posts: 5,054
Registered: ‎03-31-2012

Re: Ultrascale FPGA internal maximum frequency issue

@quincyq2003 look at https://www.xilinx.com/support/documentation/data_sheets/ds893-virtex-ultrascale-data-sheet.pdf which gives you max frequency for some cells (block ram, dsp48 etc in tables 32, 34, 35 ...) but they don't say anything about clb registers anymore. Based on the chip speed (take -1) buffers are limited to 630 MHz so this is an upper bound. DSP48 registered max speed is 594 MHz. Probably you can't go any faster than this for clb DFFs either but potentially lower. You can check speedprint to see actual CLB DFF timing values.

- Please mark the Answer as "Accept as solution" if information provided is helpful.
Give Kudos to a post which you think is helpful and reply oriented.

View solution in original post


All Replies
Highlighted
Teacher
Posts: 5,054
Registered: ‎03-31-2012

Re: Ultrascale FPGA internal maximum frequency issue

@quincyq2003 look at https://www.xilinx.com/support/documentation/data_sheets/ds893-virtex-ultrascale-data-sheet.pdf which gives you max frequency for some cells (block ram, dsp48 etc in tables 32, 34, 35 ...) but they don't say anything about clb registers anymore. Based on the chip speed (take -1) buffers are limited to 630 MHz so this is an upper bound. DSP48 registered max speed is 594 MHz. Probably you can't go any faster than this for clb DFFs either but potentially lower. You can check speedprint to see actual CLB DFF timing values.

- Please mark the Answer as "Accept as solution" if information provided is helpful.
Give Kudos to a post which you think is helpful and reply oriented.